Package gluing machine



July 29, 1941. E. T. swAN .L -rm.`

PACKAGE GLUING MACHINE Filed Feb. 21, 1940 7 Sheets-Shea*I .1A

.July 29, 1941. EjT, SWAN EN; 2,250,611

PACKAGE GLUING MACHINE FiledFeb. 21, 194o` 7 sheets-sheet 2 y GLU/IVG STA T/O/ A ASSEMBLY STAT/ONS 6' July 29, 1'941. E T SWAN HAL 2,250,611

PACKAGE GLING MACHINE Filed Feb. 2l, 1940 7 Shets-Sheet 3 /N VE N Tons EDWARD 7." SWA/V 5 y RIC/mea s. ,00,025

T A r TOR/v5 Ys July 29, 1941. E. T. swAN ETAL PACKAGE GLUING MACHINE Filed Feb. 2l, 1940 '7 Sheets-Sheet 4` /hvenars Edward TSM/an Hic/lara f fana/c July 29, 1941.

E. T. swAN ETAL PACKAGE GLUYING MACHINE Filed Feb. 21, 1940 7 Sheets-Sheet 5 /nvenzars fdwam/ I Swan Rib/myd Pao/e July 29, 1941.' E. T. swAN Erm.

ACKAGE GLUING MACHINE Filed Feb. 21, 1940 7 Sheets-Sheet 6 July 29, 1941. E. T. SWAN ErAl. v 2,250,611

' PACKAGE GLING MACHINE l vFiled Feb. 21, 1940 7 sheets-sheet 7 l Patented July 29,1941

UNITED STATE s PATENT OFFICE PACKAGE GLUING .MACHINE Edward T. Swan and Richard S. yl-"oole, Battle Creek, Mich., assignors to Kellogg Company, Battle Creek, Mich., a corporation of Delaware AApplication February 2l, 1940, Serial No. 320,156

5 Claims.

taller to offer some advantage in price when the customer purchases more than one carton.l The manufacturer, in recognizing this custom, has combined two, three or more cartons at the factory as a composite package so as to save the time of the retailer in assembling and tying the cartons together. In this connection, it had been proposed temporarily to unite the cartons together by adhesive tape, or gummed paper wrapped around the composite package. Sometimes string was employed for this purpose, but in any case the results were not altogether satisfactory Abecause the binding material, whether tape or string, tended to make the composite package uncartons to as many gluing stations, at which there is mechanism comprising a glue carrier orltransfer roll which obtains a charge of glue from a master roll and automatically applies the charge of glue, in the formo! one or more daubs, to one orboth sides of each carton as it is presented to the glue carrier. After passing the gluing station the carton bearing the glue spots is sandwiched in between two other cartons, one on each side to form a three-carton package, in

j which the cartons rigidly adhere to one another.

sightly and on occasion the cartons became The invention willl be better understood when the following specication is perused in connection with the accompanying drawings.

In the drawings:

Figure 1 is a layout or a pair of gluing stations marked A and B, which supply glued cartons to a pair of assembly stations Imarked C and D, at which the composite package is formed.

Figure 2 is a perspective view of a composite package comprising three cartons, and in which the intermediate carton has a pair of glue spots on each side thereof, to which the outside cartons adhere.

Figure 3 is a side elevational view of the improved gluing machine for use with two lines of carton travel.

Figure 4 is a horizontal cross sectional view taken along the line 4 4 in Figure 3, and looking in the direction of the arrows.

Figure 5 is a cross sectional view taken along the line 5-5 in Figure 3, and showing the upper gether, and particularly a method and means for performing this function in such a way as to leave the composite package in' an attractive condition, but still prevent any undesired separation between the individual cartons.

Another object is to provide an improved machine for applying adhesive to one or more cartons of a group in such a way that the remaining cartons of that group can be causedrmly to adhere to the adhesive-bearing carton, and

J when joined together in this manner the adhesive will be hidden from view.

A still further object is to providea machine of the' type set forth which will apply' the adtogether until separated by the ultimate consumer.

The above objects are attained, in brief, by automatically conveying any number of lines of portion of the machine, particularly the operation of the glue carrier in receiving the glue from the master roll and applying the glue to the carton.

Figure 5 shows the glue carrier actually in contact with the master roll. f

Figures 6 and 7 are vviews similar to Figure 5, except that they show the successive positions assumed by the glue carrier in moving upwardly -from the master roll to the carton. Figure l actually shows the carrier in contact with the carton.

Figures 8 to 13, inclusive diagrammatically illustrate the successive positions of the stop hook lever which periodically stops each carton at the gluing station.

General operation and purpose of the improved gluing machine Referring more particularly to Figure 1, it will be noted that there is a plurality of gluing stations, typically illustrated as two stations A and B, through which twolines of cartons travel on their way to the assembly stations C and D. The cartons are designate by the reference character I and are caused travel between the stations A, C and B, D byl\ means of conveying belts 2 which willbe described more particularly in connection with the improved gluing machine. These belts terminate to the right of Figure 1 at a machine which precedes the gluing machine in the process line to which the cartons have been subjected, and in the case of a cereal factory this preceding machine is usually a so-called top sealer. The'purpose of the top sealer is simply to glue the upper flaps of the carton after the carton has been filled with cereal or other food stuffs, and weighed.

Thus the carton is presented by the conveying belt 2 to one of the gluing stations A, B, at which station two or more spots of glue 3 are applied to the opposite sides of the carton by the glueconveying wheels 4. After the glue has been applied, each carton is conveyed by the belt 2 to one of the stations C, D where an operator, indicated at 5, is normally stationed. In front of the operator there is a metal platform onto which is deposited a pair of cartons 'I, one on each side of the glued carton I, by means of the traveling belts or other conveyors 8.

The timing of the belts 2 and 8 is such that l the carton 'I arrives at the platform 6 simultaneously with the glued carton I, and in order to assure this simultaneity of arrival, abutments 9 are provided which will stop all three cartons momentarily at the assembly position. The operator 5 then simply compresses the three cartons I, I together in any convenient manner, causing the cartons 1 to adhere to the intermediate carton I to form a composite package. 'I'he threeunit package is then lifted oi of the platform 6 by the operator, while still pressing the cartons together, and deposited in a dryer III which is` maintained at a temperature sufficiently high to cause the glue to harden in a relatively short time. At the expiration of this time the composite package is removed from the dryer and is then ready to be shipped to the retailer.

Details of the gluing machine-conveyor belts The present invention relates more particularly to the machine employed at the gluing stations A, B and is shown in its entirety in Figures 3 and 4, to which reference should now be made.

` portion of the belt to the left of each system.

The frame of the machine is composed of a y 'vide a support for the operating mechanism. of

the machine. In addition to the main framework II, I`2, there is also provided a pair of stanchionsf or upright bars I3, removed from the main frame of the machine and having for their purpose to carry a shaft I4 on which is mounted a sprocket I5 and a pair of pulleys I6 which carry the pair of conveying belts 2. It has been pointed out in connection with Figure l that these-belts are spaced from one another and pass through the respective gluing stations A and B. At their opposite ends the belts 2 are caused to pass over a `pulley I'I, journalled at -I8 on an upstanding arm I8 which is secured to the right-hand upright member II` (Figure 3).

From the pulley I'I- each belt 2 passesover a` pulley 20 which is supported from the framework by the arm ZI, and from -there the belts pass over the pulley 22 and around a belt-tightening It will be further noted that this change in level of the belts-appears just before the gluing stations A, B, and the purpose for this change in level will be pointed vout hereinafter. It is apparent that the machine shown in Figure 3 Is of a duplex character in that it embraces the two gluing stations A, B, within the same framework and .employs mechanism in common for operating the elements at the two stations.

In order to prevent the conveyor belts 2 from sagging, as it will be recalled these belts carry the cartons I filled with 'fluent material, there is provided a number of lengths of plate 26, as many lengths as there are different levels of the belts, and which are supported from the frame II, I2 in any suitable and convenient manner. The end supports of the plates 26 are clearly shown in Figure 3, these ends resting on arms 21 which extend out-from the arm I9 and the uprights I3, respectively.' The left-hand arm 2l (Figure 3) may also serve as a journal for the belt-tightening mechanism 23.

In line with the belts 2, at the right-hand end (Figure 3), there is a pair of conveyor belts 28', journalled at 29 and extending to the right in order to convey cartons from the preceding machine of the process line, which normally would be a top sealer, onto the conveyor belts 2 which carry these cartons through the gluing and vassembly stations. As these cartons move from the belts 28 onto the belts 2, one line of cartons, on reaching the pulley arrangement 24, will drop from the upper length of the belt 2 to the lower length, where it will proceed at this level through the gluing station B, at which spots of glue are applied to the cartons in the manner described heretofore, and will continue to travel with the belt .at the same level until it reaches the stop 9 at the assembly position 5. The cartons on the other line of belts, after leaving the belt 28, will proceed along the upper length of the belt 2 until each carton reaches the pulley arrangement 25 just prior to the gluing station A, and then will drop to the lower length of the belt 2 and proceed along this level of belt until it too reaches the stop 9 at the assembly station. The purpose of causing each belt to pass through its respective level-changing pulley mechanism 24, 25 just prior to each of the gluing stations B, A, will be explained in connection with the carton-stopping mechanism shown in Figures 8 to 13.

The rotative eiort for each of the pulleysl I8 is derived from a sprocket I5, about which passes two sprockets.y 3l'v carried on a shaft 32, and each of these sprockets is connected through a `chain 3|! to corresponding sprockets I5 carried onthev shaft I4. The shaft I4 is preferably, of a split typeso that each pulley I 6 can be driven by its respective sprocket: I5.l independently 'of one "another.- Consequently, the chain 30 may be removed from one of the sprockets 3l and its corresponding sprocket I5 to stop that pulley I6 connected with the particular sprocket. Thus any one of the belts 2 may be stopped by simply removing the driving chain 30 which operates that particular belt. The shaft 32 is journalled ted with glue.

on the framework I2 in any suitable manner, as

' indicated by the outstanding arms 33.

.The shaft 32 carries a bevel gear 34 which meshes with a bevel gear 35 carried on a cam shaft 36. 'I'he latter is Journalled on the frame I2 at the bearings 31. On the opposite side of the framework from the gear 35 the shaft carries a gear 38, which meshes with a pinion 39 supported onv a shaft 40 which is journalled at 4I. 'Ihe shaft 48 carries at its opposite end a gear 42 which engages a driving gear 43 of an electric motor 44. 'I'husthemotor 44 drives each of the Carton-stop mechanism Referring more particularly to Figures 3 and 4, the shaft 36 is provided with a cam 45 against which is spring-pressed a roller (not shown) carried on the end of a bellcrank lever 46 which is pivoted on the shaft 41. The end of the lever 46 is pivotally secured to a connecting rod 48,

and the latter in turn is pivotally secured to the end of a bellcrank lever 49 pivoted at 50 to one of the frame uprights II. The opposite end of the lever 49 is secured, through a connecting rod` I, to a crank 52, the latter belngvpivoted on a shaft 53. This shaft carries a hub 54 and a pair of spacer members 55, to which is rigidly secured a bar 56. One end of the bar 56 (the left-hand end as shown in Figure 3) is provided with a depending hook projection 51, and the opposite end carries anupstanding stop'member 58. It is apparent that as the shaft 36 rotates the rotation of the cam 45 will cause the connecting rod 48 to reciprocate in a, vertical di-' rection, moving the bellcrank lever 49 about its pivot 50 and causing the bar 56 to swing through a vertical arc. There is a bar 56 provided at each of the stations A, B, and the bar at the station B is actuated through a cam 59 which is mounted on a shaft 60. As in the case of the mechanism at the other station, the cam 59 swings a bellcrank lever 6I, which is mounted on a shaft 62 to cause reciprocatory movement of its corresponding connecting rod 48. The shaft 60 derives its rotative effort from a sprocket 63 over which passes a chain 64 from a sprocket 65 on the main cam shaft 36. A.

As stated hereinbefore, the function of the bar 56 at each of the stations A, B is to stop each carton in the respectivA line of cartons a. suicient length of time at the respective gluing stations to permit the cartons to be daubed or spot- As can be seen in Figures 8 to 13, as the bar 56 moves on its shaft 53 the front depending hook projection 51 reaches downward 1y and projects over the front upper edge of the carton which is immediately beneath that `particular bar. At the proper time in lthe seof the succeeding carton. A study of Figures 8 to 13 will show that there is a jog 66 appearing at theabutting surfaces of the two cartons I, due to the difference in level of the belts 2 caused by the pulleyarrangements 24, 25, and this jog is of sufficient depth to accommodate the stop member 58 as it moves downwardly. A complete description of the sequenceof operation of the bar 56 in stopping the cartons only at their propertime will be given after thel gluing mechanism has been described.

Gluing mechanism x .k

l As shown more particularly in Figures5, 6 and 7, the gluing mechanism comprises. essentially a so-called master roll or drum 61, which is adapted to rotate in a trough 68 containing a suitable adhesive material 69., 'Ihere is a trough 68 positioned at each station A, B, and these troughs may be mounted in any suitable manner on the frame ofl the machine, for example, by

means of straps 10 (Figure 3) which`n are riveted to one of the transverse members I2 of the frame. The drums 61 are mounted on a pair of shafts 1I, one of the shafts extending between the rightv hand pair of uprights I I (Figure 3) and the other shaft extending between the left-hand pair of uprights II. 'I'hese'shafts are journalled in the frame in any suitable manner. The shafts 1I are extended to carry sprockets 12 which are driv' en by chains 13 from the sprockets 14 (Figure. 4). One of the sprockets 14 is mounted on the shaft 36 and the other sprocket 14 is mounted on the shaft 60.

It is apparent that as the drum 61 rotates in the adhesive material 69 it will gather up adhesive on its surface, as shown in Figure 5, and

it is necessary to scrape off the excess adhesive. To do this there is provided at each stationv an inwardly projecting arm 15, which has an opening to receive a vertically positioned rod 16, the latter being mounted at its lower end in a bracket 11. The rod 16 is provided with screw threads at its lower end which receive a handoperated wheel 18. 'I'hus by rotating the wheel 18 the rod 16 can be caused to reciprocate in a vertical direction with respect to the arm 15.

Extending diagonally from the arm 15 is a truss member 19 which carries at its upper end a pivot 80, about which a lever 8| is adapted to rotate. One end of this lever is pivotally secured to the upper end of the rod 16 and the other end of the lever carries a scraping tool 82. Consequently as the rod 16 is moved upwardly or downwardly, depending on the direction of rotation of `the wheel 18, the scraper 82 is moved outwardly or inwardly against the drum 61 so as to control the amount of adhesive left on the surface of the drum after it passes the tool 82. For transferring the adhesive material from the drum 61 to the cartonsl, we provide a pair of socalled carrier or transfer wheels 83 which are connected in such a manner, through cam-operated mechanism, as to cause the wheel 83 firmly to contact with the drinn in one of its positions until the surface of the wheel becomes coated with adhesive obtained from the drum, and then the wheel is moved upwardly until it contacts with the surface of the carton. 'Ifhe mechanism for effecting this movement of the wheel 83 is illustrated in detail in Figures 5' to 7. Starting first with the cam which actuates the wheel' 83, it 'will be noted that the shaft 36 carries a pair of cams `84 which actuate one pair of wheels 83 at the station B, and shaft 60 carries a similar pair of cams 85 which actuate the other pair of wheels 83 at station A. As seen in Figures to '1, a roller 88, is pressed against the surface of the cam 84 or 85, and this roller is carried on the end of a lever 81 which is pivoted on a shaft 88. As seen more clearly in Figure 4, the shafts 88 extend only over approximately half of the width of the machine but over different half widths,and are journalled in any suitable manner, as indicated at 89, to some of the transverse members l2 of the frame.

The end of the lever 81 opposite the roller 88 is pivotally secured to a connecting rod 90 which extends approximately vertically upward, and is pivotally secured as at 9| to a diagonally extending arm 92. The arm 92 extends beyond the pivot 9| and terminates in a roller 93, which is adapted to slide within a groove 94 formed in a plate 95. This plate is held in an upright position by means of a flange member 96 extending from one of the frame members. In addition to supporting'the plate 95, the flange member 96 carries a horizontally extending projection 91 which serves as a pivot at 98 for an arm 99. The lower end of the arm 99 is pivotally secured at |00 to the arm 92 at a position approximately midway of its length, and the upper end of the arm 92 is pivoted at |0| to an arm |02. An arm |03 is pivotally mountedat |04 on the arm |02, approximately midway of the length of the last-mentioned arm. The lower end of the arm |03 is pivotally mounted at |05 to an extension of the arm 92. The lengths of the arms 92, 99, |02 and |03 are such that these arms constitute a parallelogram. An extension of the arm |02 carries the carrier or transfer wheel 83. The latter is preferably mounted on ball bearings, and as shown in Figures 5 to '1, is made of very light construction. Indeed, large holes |08 are drilled through the web to reduce the metal content as much as-possible.

Assuming that the different parts of thel mechanism have the same relative positions as shown in Figure 5, it is apparent that as the drum 81 is rotated clockwise, the left-hand wheel 83, which is in contact with the drum, will rotate counter-clockwise and will have deposited thereon by this contacting relation a layer of adhesive, which remains on the surface of the drum 61 after the drum has passed under the, scraper 82. The periphery of the cam 84 is so designed that as the cam rotates the connecting rod 90 will be drawn downwardly. The groove 94 is of such configuration that as the connecting rod swings the arm l92 about its pivot |00 the arm 92 will also be given a longitudinal 'movement, depending on the shape of the groove 94. This groove first 'extends to the left to about one-third of its length, and then slightly to the right for another third, and then back slightly to the left for the remaining portion of the groove. Consequently, as the arm 92 is moved downwardly the arm is also given a movement to the left and afterward a slight movement tothe right, and again to the left. The net result of this composite movement of the arm 92 is to cause the parallelogram of arms to swing the acuden be large to produce a relatively large movement of the wheel 83. It is apparent that the groove 94 can be' designed to provide a travel of the wheel 89 such as to cause the wheel to miss anyobstruction which might normally be in its path, such for example, the edge of the plate 28 on which conveyor belts 2 travel. i When the wheel 83 contacts the surface of the carton the glue carried by the wheel and obtained from the drum 81 is immediately deposited on the carton to form the daubsv or spots 3 referred to hereinbefore. It is preferred to provide more than one wheel 83 at the end of the arm |02, and as illustrated, there are two such wheels which produce two spots of glue, symmetrically positioned with respect to the side area of each carton. It is apparent that the wheel 83 lshould contact the drum 61 for a sumcient length of time to permit the transfer of sufficient glue to the surface of the Wheel. The same thing is true when the wheel 83 contacts the carton to re-transfer the glue from the wheel to the carton. The time during which contact is -to be maintained and the pressure at the time of contact with both the drumand the carton can be accurately predetermined by the shape of the groove 94. It has been found desirable to introduce flexibility of contact between the wheel 83 and the drum and between the wheel and the carton 'by cutting the groove 94 slightly wider than is necessary, and providing a spring |01 between the arm 99 and the plate 95 to thereby cause the roller 93 to tend to follow at all times the outer edge of the groove 94. It will be understood that there are two wheels 83 carried by the arm |02 and actuated by the connecting rod 90 on one side of the carton and there is a similar operating mechanism on the other side of the carton so that each carton is provided with two pairs of glue spots on opposite sides thereof. It has been pointed out that at each station A, B there are provided two pairs of the double-acting carrier wheels 83, and one pair is actuated by the pair of cams 84 on the carrier wheel 83 from its contact position with shaft 36 and the other pair is ac'tuated by the cams en the shaft 60 (Figure 4).

It is necessary that each carton remain stationary at either station A or B during the time that the carrier wheel 83 is in contact with the carton and is therefore applying the adhesive; otherwise, the adhesive spot would be excessively wide and ndt determined solely by the width of the wheel 83.

Referring now to Figures 8 to 13, it will be noted that the left-hand end of the bar 58 has been swung to its lower position, causing the hook projection 51 to project over the front upper edge of the first carton I. At the same time the carrier wheels 83 are in contaict with the drum 81 in order to receive adhesive. Figure 9 shows the wheels 83 as having moved through their arcuate paths and are now in contact with the opposite sides of the carton, while the projection 51 still hooks over the front edge of the carton. Figure 10 shows the instantaneous kposition of the wheels 83 after they have left the handend oi' the bar 56 has been raised to release l the carton l, but at the same time the righthand end of the bar of a stop member 58 has descended to prevent the second carton from moving along with the ilrst.

Figure 12 shows how the 'two cartons are still farther separated by the action ofthe bar 56,

while Flgurel13 indicates the bar .56 as moving down at its left-hand end, ready to stop the next carton and at the same time releasing the upper front edge of the second carton from the stop member 8. Consequently, the bar 56 performs the purpose of holding the first carton I of the line momentarily in a stationary position at either .the stations A, B until the daubs of glue have been applied and the carrier wheels 83 have been retracted into a position at which` they contactthe master roll or drum 61. I

It has been found that by providing two stations A, B, simultaneously operated from a single motor Il but employing individual cams and associated mechanism, there is no detraction of supervision, ilexibility of operation or adjustoi' the glued cartons as they reach the assembly station C may be so regulated that a single operator can handle the entire output of the machine. In such case he would assemble the two cartons on opposite sides of the glued carton which has come from station A, for example;

after placing the composite package in the nearer l dryer he would then assemble the composite package, using the glued carton that came through station B so that by passing from one side of the machine to the other, the operator could package all of the glued cartons as they come through both stations A and B in an alternate manner. However, Figure 1 has exemplied the invention as employing two operators.

While we have illustrated a machine for forming a composite package out of three cartons, in which the intermediate carton has daubs of glue on opposite sides thereof, it will be understood that the improved machine may be readily modified to provide a composite package .which includes less than three cartons or more than three cartons. In the case of a two-carton package, only one side of the carton would be daubed with glue and consequently only one set of wheels 83 would be employed. In the case of a vecarton packagevthe second and fourth cartons would have applied thereto, on opposite sides, one

or more daubs of glue so that when all five car` tons are assembled and pressed together the -glued cartons will serve to cause all of the cartons to adhere to one another to make a vecarton package. Many other arrangements will occur to those merely skilled in the art, depending on the number of cartons which are to be secured together in`"order to form a composite package. Obviously, instead of providing a double-unit gluing machine the gluing stations of the machine may'be increased by simply providingadditional cams on the shafts 36 and 60, together with the necessary accessory mechainvention.

n wm be understood nieuwe desa-e tacomprehend within this invention such modiilcations as come within the scope of the claims and the Having thus fully described our invention, what we claim as new and desire to secure byjLetters Patent is:

1. A machine for applying'glueto a,carton comprising means for conveying aline of cartons to and from a gluing station, afroll at said station immersed in a body of glue, a glue carrier for transferring glue from said roll'to said carton, means forstopping. a carton at the gluing sta-y tion, and means for moving said carrier from a position in contact with said roll to a position in contact with said cartonduring the time that the carton is stopped at the gluing station, said stopping means comprising a pivoted lever having a downwardly extending projection 'at one end for hooking over the upper edge of the carton at the gluing station and having an upwardly extending member which presses against the succeeding carton. l

2. A machine for applying glue to a' carton comprising means for conveying aline of cartons to and from a" gluing station, a roll at said station immersed in a body of glue, 4a glue carrier for transferring gluefrom said roll to said carton, means for stopping a carton at the gluing station, means -for moving said carrierfrom a position in contact wtih said roll to a""position in contact with said carton during the time that the-carton is stopped at the Agluing station, said stopping means comprising a pivoted lever having a downwardly extending projection at one end for hooking over the upper edge ot` the carton at the gluing station and having an vupwardly extending member which presses against the succeeding carton, and means for operating said pivoted lever in such a way that the upwardly extending member prevents the movement of said succeeding carton into the gluing station until the downwardly extending projection has been removed to permit the preceding carton to leave the gluing station.

3. A machine for lapplying glue to 'cartons comprising means for conveying a line of cartons to and from the machine on a conveyor belt, means at a gluing station on said machine ior gluing the cartons, said belt being arranged to change its level from a high level to a low level immediately before each carton reaches the gluing station so as to leave a jog between the rear upper edge of the carton at the gluing station and the front upper edge of the succeeding carton, a pivoted lever at the gluing station, said lever having a depending hook projection at one V end and an upstanding stop member at the other end, said hook projection being adapted to hook over the upper edge of the carton at the gluing station when the lever is swung in one direction on its pivot, said stop member being adapted to contact the upper front edge of the succeeding carton at said jog when the lever is swung in the opposite direction, and meansfor rotating said lever on its pivot to stop a carton at the gluing station and for rotating the lever in the opposite direction for preventing the succeeding carton from entering the gluing station until the immediately preceding carton has left the gluing stalever having a depending hook projectionat one end and an upstanding stop member at the other end, said hook projection being adapted to hook over the upper edge of the carton at the gluing station when the lever is swung in one direction on its pivot, said stop member being adapted to contact the upper front edge of the succeeding carton`at said jog when the lever is swung in the opposite direction, and means for rotating said lever on its pivot to stop a carton at the gluing station and for rotating the lever in the opposite direction for preventing the succeeding carton from entering the gluing station until the immediately preceding carton has left the gluing station, said gluing means at the gluing station comprising a swinging carrier wheel which may be used between a body of glue: and the surface of the carton to apply on said surface at least one daub of glue.

5. A machine for applying glue to cartons comprising means for conveying a line of cartons to and from the machine on a conveyor belt, means at a gluing station on said machine for gluing the cartons, said belt being arranged to -immediately before each carton reaches the gluing station so as to leave a jog between the rear upper edge of the carton at the gluing station and the front upper edge of the succeeding carton, a pivoted leverv at the gluing station, said lever having a depending hook projection at one end and an upstanding stop member at the other end, said hook projection being adapted to hook over the upper edge of the carton at the gluing station when the lever is swung in one direction on its pivot, said stop member being adapted toV contact the upper front edge of the succeeding carton at said jog when the lever is swung in the opposite direction, means for rotating said lever on its pivot to stop a carton at the gluing station and for rotating the lever in the opposite direction for preventing the succeeding carton from entering the gluing station until the immediately preceding carton has left the gluing V station, said gluing means comprising a roll immersed in a body of glue, a glue carrier for transferring glue from said roll to the carton at the gluing station, and means for moving said carrier from a position in contact with said roll to a po-v sition in contact with said carton during the time that the hook projection of said pivoted lever is hooked over the upper edge of the carton at the gluing station.

EDWARD T. SWAN. x RICHARD S. POOLE. 

